mirror of
https://github.com/openharmony/drivers_framework.git
synced 2026-08-27 02:42:28 -04:00
mamingshuai
89 lines
2.2 KiB
C
89 lines
2.2 KiB
C
/*
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* Copyright (c) 2020-2021 Huawei Device Co., Ltd.
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*
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* HDF is dual licensed: you can use it either under the terms of
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* the GPL, or the BSD license, at your option.
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* See the LICENSE file in the root of this repository for complete details.
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*/
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/**
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* @addtogroup OSAL
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* @{
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*
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* @brief Defines the structures and interfaces for the Operating System Abstraction Layer (OSAL) module.
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*
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* The OSAL module OpenHarmony OS interface differences and provides unified OS interfaces externally,
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* including the memory management, thread, mutex, spinlock, semaphore, timer, file, interrupt, time,
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* atomic, firmware, and I/O operation modules.
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*
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* @since 1.0
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* @version 1.0
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*/
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/**
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* @file osal_mem.h
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*
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* @brief Declares the driver memory request and release interfaces.
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*
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* @since 1.0
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* @version 1.0
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*/
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#ifndef OSAL_MEM_H
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#define OSAL_MEM_H
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#include "hdf_base.h"
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#ifdef __cplusplus
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extern "C" {
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#endif /* __cplusplus */
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/**
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* @brief Allocates memory of a specified size.
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*
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* @param size Indicates the size of memory to allocate.
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*
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* @return Returns the pointer to the allocated memory if the operation is successful; returns <b>NULL</b> otherwise.
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* @since 1.0
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* @version 1.0
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*/
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void *OsalMemAlloc(size_t size);
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/**
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* @brief Allocates memory of a specified size, and clears the allocated memory.
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*
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* @param size Indicates the size of memory to allocate.
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*
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* @return Returns the pointer to the allocated memory if the operation is successful; returns <b>NULL</b> otherwise.
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* @since 1.0
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* @version 1.0
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*/
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void *OsalMemCalloc(size_t size);
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/**
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* @brief Allocates memory of a specified size, and aligns the memory address on a given boundary.
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*
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* @param alignment Indicates the memory boundary alignment. The value must be a power of 2.
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* @param size Indicates the size of memory to allocate.
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*
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* @return Returns the pointer to the allocated memory if the operation is successful; returns <b>NULL</b> otherwise.
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* @since 1.0
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* @version 1.0
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*/
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void *OsalMemAllocAlign(size_t alignment, size_t size);
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/**
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* @brief Releases memory.
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*
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* @param mem Indicates the pointer to the memory to release.
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* @since 1.0
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* @version 1.0
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*/
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void OsalMemFree(void *mem);
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#ifdef __cplusplus
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}
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#endif /* __cplusplus */
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#endif /* OSAL_MEM_H */
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/** @} */
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